Dispersed Storage as Stormwater Runoff Control in Consolidated Urban Watersheds with Flash Flood Risk
Publication: Journal of Water Resources Planning and Management
Volume 142, Issue 12
Abstract
This article presents the results of analyzing the use of dispersed storage tanks as a low impact development (LID) alternative to mitigate the flash flood risk in consolidated urban watersheds in Barranquilla, Colombia. Fieldwork, rainfall and flow rate monitoring, and numerical modeling were conducted to evaluate different scenarios combining storage tank capacity, two types of storage operations, and different locations by land use and watershed sectoring. These results showed that it is possible to reduce significantly the peak flow with small-capacity tanks distributed in the urban watershed with hydraulic structures that divide the discharge during the peak-flow time interval. By storing 3–17% of the runoff volume, equivalent to a dispersed storage capacity from 4 to 19 mm rainfall, it is possible to reduce the peak flow from 25 to 75%. These results demonstrate the advantages of using low impact development for stormwater management in consolidated cities with limited space, if regulatory policies encourage the massive use of LID in existing buildings.
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Acknowledgments
We gratefully acknowledge the financial support from the Administrative Department of Science, Technology and Innovation—COLCIENCIAS and Universidad del Norte.
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Information & Authors
Information
Published In
Journal of Water Resources Planning and Management
Volume 142 • Issue 12 • December 2016
Copyright
© 2016 American Society of Civil Engineers.
History
Received: Jul 18, 2015
Accepted: May 24, 2016
Published online: Jul 20, 2016
Published in print: Dec 1, 2016
Discussion open until: Dec 20, 2016
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